Automatic control for burner-valves.



C. W. GOULD.

AUTOMATIC CONTROL FOR BURNER VALVES. APPLICATION FILED JAN- 14, 1914.

Patented M1213, 1915 1:: arms w. (tooth, or LOS alventns, cammama.

Annemarie oolv'riaoit For. BURNER-VALVES.

ToaZZ whom it may concern Be it known that LCHARLES W. GOULD, a citizenof the United States, residing at .Los Angeles, in the county of LosAngeles. State of California, have invented new and useful Improvementsin Automatic Control for Burner-Valves, of which the following is aspecification.

This invention relates to an automatic control for burner valves.

It is the object of this invention to provide an automatic control forthe needle valve of burners by which the discharge of fluid fuel fromthe burner will be regulated to maintain an approximately uniformtemperature in the combustion chamber of fur nace.

Another object is to provide an adjustment whereby the automatic valvecontrolling means can be set to operate the valve so that the latterwill feed a predetermined quantity of oil through the burner, and bywhich complete closing of the valve by the automaticvalve control can beprevented.

Another object is to provide means whereby the needle valve can bemanually closed g dependent of the pinion.

and opened independent of the automatic control means.

' The invention primarily resides in a nee-' dle valve stem having apinion loosely mounted thereon, a pivoted toothed segment meshing withsaid pinion, thermostatic con-. trolled means for rocking the segment torotate the pinion, and means for detachably connecting the pinion to thevalve stem,

' whereby the valve stem can be rotated by means of the pinion orrotated manually in-- The invention; is illustrated in the accompanyingdrawings,- in which v Figure l is a front elevation of a furnace showingthe invention as applied.

Fig. 2 is a detail in front elevation of the valve stem connections withportions broken away. Fig. 3 is a vertical section on the line 3-3 ofFig. 2, illustrating the connections of the valve stem as positioned forautomatic rotation of the valve stem. Fig. 4 is a detail in elevationonthe line 4-4 of Fig.

2, with portions broken away showing theconnections of the valve stem aspositioned efor manual operation of the latter.

More specifically, 5 indicates the threaded stem of'a needle valve 6 ofthe usual 11: pe.

adapted to regulate the flow of fluid 'uel from a supply pipe 7 to adischarge pipe 8 connecting with a suitable burner through aSpecification of Letters Patent.

Patented Apr. 13, 1%15.

Application filed Januar ia, 1914. Serial No. 812,004.

tapered port 9 in the valve casing 10. The outerportion of the valvestem 5 is formed with a cylindrical hub 11 in axial alinement with thevalve stem on which a spur pinion is revolubly mounted and held againstlongitudinal movement in one direction on the valve stem by means ofashoulder 14 on the latter against which the rear side of the pinion 12slidably abuts. p

The outer face of the pinion 12 is formed with radially'extendingV-shaped teeth 15 which are adapted to be engaged by corresponding teeth16 on the rear face of a hand-wheel 17 slidably mounted on a rectangularextension 18 on the valve stem, which extension forms a continuation ofthe hub portion 11. The teeth 15 and 16 are designed to be normally heldin engagement with each other by means of a wing-nut l9 screwed on athreaded stud 20 projecting from the end of the squared portion 18 of 21is designed to be rocked by means of a thermostatic controlled device ofany suitable description, but which is here shown as consisting of arocker'arm 24 pivoted at 25 to a suitable support directly above thetoothed segment 21 and a thermostat 26 having a member 27 adapted toengage the underside of the rocker arm 24'to one side of the pivot 25.The rocker arm 24 is connected at its outer ends to the'ends of thetoothed segment 21 by means of chains 28 or other suitable connections.

Adjustably' mounted on the rocker arm.24 on opposite sides of itspivotal support 25 arm 24 and the segment 21. The thermostat -26 may beof any desired type and affixed to any suitable point on the furnacestructure whereby it will be operated by the heat genarecounter-weighting members 29 and 30 i erated therein. In this case thethermostat 26 is shown as comprising an expandible and contractiblebellows-like structure to which the rocker-arm engaging member 27 isattached. The expandible structure contains a fluid adapted to causeexpansion and contraction of the thermostat by' variations intemperature, as is common in such devices. The, thermostat is here shownas attached to a a steam-pipe 31 leading from a furnace 32;

Inthe operation of the invention, the

- valve 6 manually adjusted in relation to the port 9 to permit thedischarge of the fluid fuel to the burner according to the intensity ofthe flame desired; this manual adjustment of the valve beingaccomplished byfirst partially unscrewing the wing-nut 19, fromthe'threaded stem as illustrated in Fig. 4,-and then withdrawing theteeth 16.

' -'on the hand wheel 17 out of engagement with the teeth 15 on thepinion 12; the latter operation being effected by sliding the hand wheel17 outwardly'on the squared portion 18 of the valve. stem, as shown inFig. 4.

The valve; stem 5 can then be rotated in either direction through themedium of the hand wheel 17 independent of the pinion 12. When thedesired adjustment ofthe valve has been obtainedthe hand wheel 17 ismoved into engagement with the pinion 12 and locked in such engagementby means of the wing nut 19; the parts being then positionedasshown'inFig. 3. I

The thermostat 26 is then set or adjusted as isccmmon inthese-devices tooperate whenv the temperature in the furnace in:

' creases above a predetermined degree to rock the arm 24; so as totransmit a rocking'movement to the segment 21 and thereby rotate [thevalve stem 5 through the medium of the a. burner; the thermostat 26being operated when thetemperature in the furnace. falls belowapred'etermined degree to relieve the rocker arm 24 in such manner thatthe conn- 7 "-ter-weight, 29- or 30 will restore the rocker arlm'to apint. below its normal position so as to I00 "the segment 21 and rotatethe valve stem 5' in the opposite direction to open the valve widerand'permit the increased flow of'fluid fuel to the burner. Thedevicewill thus automatically operate to maintain air'approximatelyuniform feed of the fluid fuel to the burner and will vary the feedaccording to variations of temperature I in the furnace or a portionthereof to which the thermostat 26 is atta/ched.

'By providing a detachable connection between the pinion 12 and thevalve'stem 5 the latter can be manually adjusted at any time either toincrease the flow of fluid fuel to the I burner or to. close the valve;this manual operation of the valve being accomplished as beforedescribed by loosening the wing-nut 19 and moving'the hand wheel 17 outof engagement with the pinion 12. The pinion 12 will be held againstlongitudinal movement on the shaft 5 by means of the wingnut 19 hearingagainstthe hand wheel 17 which in turn bears against the pinion 12 andcrowds it against the shoulder 14 on the valve stem 5. The provision'ofa spur pinion and a. toothed segment permits of the 7b longitudinalmovement of the valve stem 5 as the latter is advanced or retracted inits casing; the teeth on the pinion 12 sliding longitudinally of theteeth on the segment 21 in constant engagement therewith during suchmovement of the valve stem.

What I claim is:

1. In an automatic control for burner valves. the combination with a.needle valve stem of a hand-wheel on said stem a pinion revolublymounted onthe stem, means for detachably connecting the pinion tothehand- Wheel on the stem, a toothed segment meshing with said pinion,and thermostatic controlled means. operating on said segment forautomatically rotating the valvestem.

2. In a device for automatically operating needle valves, thecombination with a needle valve stem of a pinion revolubly mounted onsaid valve stem, 2, hand wheel on said valve stein turnable therewith,and slidably longitudinally thereon, means for detachably connecting thehand wheel to the pinion, a toothed segment meshing with said pinion,and thermostatic controlled means for rocking the segment to revolve thevalve stem throu h the hand wheel.

3. a thermostatic control for needle valves, a pivoted toothed segment,a pinion engaged by said segment, a valve stem on which said pinion 1srevolubly mounted, a. hand wheel slidably mounted on the valve stem andrevoluble therewith, means for connecting the pinion to the hand wheel 7whereby rotation of the pinion will rotate 1 the valve stem, saidmeansadapted to be disengaged to permit manual operation of the valve stemindependent of the pinion, means for locking the hand wheel andpinion inengagement'with each other, and thermostatic controlled means for rockinthe segment to rotate the valve stem throng the hand wheel and. pinion.i

In witness that I claim. the foregoing I have hereunto subscribed myname this 30th day of December, 1913.

l CHARLES w. GOULD.

Witnesses: k

EDMUND A. STnAUsn, ,MAnte BATTEY.

